terminal 

//Terminal***********

npm install -D tailwindcss OR all at once with npm install -D tailwindcss autoprefixer

THEN

npx tailwindcss init

//Add the paths to all of your template files in your tailwind.config.js file.***********

/** @type {import('tailwindcss').Config} */

module.exports = {

content: ["./src/**/*.{html,js,jsx}"],   ....comma separated file types

theme: {

extend: {},

},

plugins: [],

}

//Add the Tailwind directives to your CSS***********

@tailwind base;

@tailwind components;

@tailwind utilities;

//Terminal - Start the Tailwind CLI build process....Per docs...Haven't used myself***********

npx tailwindcss -i ./src/input.css -o ./dist/output.css --watch

//You're ready to use! If you want to use postcss, in Terminal***********

npm install -D postcss-import

//postcss.config.js file

module.exports = {

plugins: {

'postcss-import': {},

tailwindcss: {},

autoprefixer: {},

}

}

Source: https://tailwindcss.com/docs/using-with-preprocessors#using-post-css-as-your-preprocessor

https://tailwindcss.com/docs/installation